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The Sun
The Sun

Document
Document

... Scientists made the assessment after studying 18 years of data from the Ulysses satellite which has sampled the space environment all around our star. They expect the reduced output to have effects right across the Solar System. Indeed, one impact is to diminish slightly the influence the Sun has ov ...
Uranus - Uplift Peak
Uranus - Uplift Peak

... the five classical planets, it was never recognized as a planet by ancient observers because of its dimness and slow orbit. Sir William Herschel announced its discovery on March 13, 1781, expanding the known boundaries of the solar system for the first time in modern history. This was also the first ...
Comparing the Chemical Compositions of the Sun and Earth
Comparing the Chemical Compositions of the Sun and Earth

... and have relative abundances that have not changed since the Earth’s formation. These relative abundances closely track the solar abundances for these elements and would be the abundances used in the thought experiment described above to identify the host star of the Earth. Of these refractory eleme ...
Piscataway High School - Piscataway Township Schools
Piscataway High School - Piscataway Township Schools

... Our home-The Milky Way Galaxy The history of the milky way galaxy. Describe what other galaxies look like, how are they classified State and describe the Hubble Law State the evidence which shows that the universe is expanding State the evidence which supports the Big Bang Theory Describe the basic ...
Apparent Motions of Celestial Objects
Apparent Motions of Celestial Objects

... In the Northern Hemisphere: The Sun rises north of east and sets north of west in the summer. The sun’s altitude at noon is highest during the year. The sun’s “apparent path” across the sky is at its longest (greater than 12 hours). ...
Solar System Formation - Madison Public Schools
Solar System Formation - Madison Public Schools

... • Because of the rotation it started to flatten out • It started to spin faster as the cloud shrunk • Planets formed in cooler outer regions ...
Geology 110: Earth and Space Science
Geology 110: Earth and Space Science

... #10: Complete the following concept map by correctly adding the connecting phrases or terms provided to the appropriate locations. Some items may be used more than once; others may not be applicable to this diagram. ...
Geocentric vs. Heliocentric - Answering the Debate 2014
Geocentric vs. Heliocentric - Answering the Debate 2014

... The Parallax Effect is not observed. Planets move across sky – only slower We’d fall off the Earth if it was moving in orbit God created us and put us in the center of the ...
PPT: The Scientific Revolution
PPT: The Scientific Revolution

... Skepticism and Independent Reasoning: For example, Descartes reached the extreme of skepticism by doubting his own existence. Then, he realized that his own act of thinking proved his own existence (I think, therefore, I am.) Challenges to Religion: The idea that the universe worked like a machine a ...
Apophis - Killer Asteroid?
Apophis - Killer Asteroid?

... after the Roman god Mercury who was the messenger to the gods, it is the smallest planet, and is very difficult to see because it is so close to the sun. ...
COMMENTS ON HOMEWORK 1 In many cases the answer to a
COMMENTS ON HOMEWORK 1 In many cases the answer to a

... A1. Venus orbits the Sun at a distance of about 0.7AU, as stated in the book. This estimate is also obtainable from the Figure on page 3. A note on the use of the word 'about'. What do I mean when I say the AU is about 93 million miles? The length of the AU is now known very accurately: one source g ...
Kleopatra - OSIRIS
Kleopatra - OSIRIS

... Journey with us through the alphabet as we learn about Earth’s rocky neighbors – the asteroids! There are interesting asteroid characters in our solar system, including an asteroid that has its own moon and even one that is shaped like a dog bone! For each letter of the alphabet, we will showcase an ...
1.1989 x 10 30 kg
1.1989 x 10 30 kg

... Scientists made the assessment after studying 18 years of data from the Ulysses satellite which has sampled the space environment all around our star. They expect the reduced output to have effects right across the Solar System. Indeed, one impact is to diminish slightly the influence the Sun has ov ...
review 2nd sem EOC- WIG
review 2nd sem EOC- WIG

... 2. What interval of time is determined by earth’s rotation? 3. What interval of time is determined by earth’s revolution? 4. How long would the year be if the earth was evolving at twice its current velocity? 5. Earth experiences because as it tilted axis of degrees the amount of direct differs thro ...
1 When Is a Planet Not a Planet? The Story of Pluto
1 When Is a Planet Not a Planet? The Story of Pluto

... The planets that were closest to the Sun didn’t keep much of their gas. The Sun’s heat blasted it away, leaving behind a solid sphere of matter, with only a little gas. Those spheres became the terrestrial planets---Mercury, Venus, Earth, and Mars. But on the outer edges of the disk, far away from t ...
Newton derives Kepler`s laws
Newton derives Kepler`s laws

... 3. a) What is the kinetic energy of a 55 kg runner while running the 100 yard dash in 10 seconds? Use her average velocity. b) What is the kinetic energy of Jupiter in motion around the Sun? ...
Venus - Uplift Education
Venus - Uplift Education

... have completely reconstructed 300 to 500 million years ago. Volcano activities, deformation of the crust have shaped the surface. At least 85% of the Venusian surface is covered with volcanic rock with huge lava flows flooded the plains. The flows have also produced channels that extend for hundreds ...
Outer Planets Review Sheet with answers: 1.) Give the order of the
Outer Planets Review Sheet with answers: 1.) Give the order of the

... b.) The object must have enough mass for its gravity to have pulled it into a sphere shape. c.) The Planet must have cleared its orbit. (The objects orbiting the planet must not combine to make up more than half of the actual planet’s size.) 40.) Which of these rules did Pluto fail? (1 Mark) Pluto f ...
Institute of Shock Physics: Computational Modelling
Institute of Shock Physics: Computational Modelling

... have provided a cradle for early life ƒ Environmental catastrophes following impacts leading to mass extinctions ...
NEXT MEETING THURSDAY, 18 th October 2012
NEXT MEETING THURSDAY, 18 th October 2012

... fly near Saturn’s Titan its orbit would then take it out of the Solar System. The trip to Uranus and Neptune was taken on by Voyager 2. These two probes are now heading out of the Solar System. Recent data from Voyager 1 have shown a jump in cosmic particle counts which suggest it has effectively le ...
Astronomy - Fort Thomas Independent Schools
Astronomy - Fort Thomas Independent Schools

... the stars that does the Earth. The synodic period represents the time it takes Venus to move from two successive identical configurations as viewed from the Earth, which is also orbiting the Sun. This causes the ...
Astronomy Unit Test Review Sheet
Astronomy Unit Test Review Sheet

... 11. List the following types of stars from oldest to youngest: giant, supergiant, white dwarf, main sequence. Explain the temperature ranges and luminosity ranges for each (2-2). ...
Protostar formation
Protostar formation

... the nuclear fuel (hydrogen) is “light up”. Light is emitted, and the star starts its life: on one hand, gravitational force pushes inward, while on the other hand internal pressure due to the nuclear reactions pushes outward. ...
Einstein on Kepler
Einstein on Kepler

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Formation and evolution of the Solar System



The formation of the Solar System began 4.6 billion years ago with the gravitational collapse of a small part of a giant molecular cloud. Most of the collapsing mass collected in the center, forming the Sun, while the rest flattened into a protoplanetary disk out of which the planets, moons, asteroids, and other small Solar System bodies formed.This widely accepted model, known as the nebular hypothesis, was first developed in the 18th century by Emanuel Swedenborg, Immanuel Kant, and Pierre-Simon Laplace. Its subsequent development has interwoven a variety of scientific disciplines including astronomy, physics, geology, and planetary science. Since the dawn of the space age in the 1950s and the discovery of extrasolar planets in the 1990s, the model has been both challenged and refined to account for new observations.The Solar System has evolved considerably since its initial formation. Many moons have formed from circling discs of gas and dust around their parent planets, while other moons are thought to have formed independently and later been captured by their planets. Still others, such as the Moon, may be the result of giant collisions. Collisions between bodies have occurred continually up to the present day and have been central to the evolution of the Solar System. The positions of the planets often shifted due to gravitational interactions. This planetary migration is now thought to have been responsible for much of the Solar System's early evolution.In roughly 5 billion years, the Sun will cool and expand outward many times its current diameter (becoming a red giant), before casting off its outer layers as a planetary nebula and leaving behind a stellar remnant known as a white dwarf. In the far distant future, the gravity of passing stars will gradually reduce the Sun's retinue of planets. Some planets will be destroyed, others ejected into interstellar space. Ultimately, over the course of tens of billions of years, it is likely that the Sun will be left with none of the original bodies in orbit around it.
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